--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6294201925 dns-udp-queries-received-ipv6: 1246592220 dns-tcp-queries-received-ipv4: 170500853 dns-tcp-queries-received-ipv6: 33492394 dns-udp-responses-sent-ipv4: 6145586624 dns-udp-responses-sent-ipv6: 1245175647 dns-tcp-responses-sent-ipv4: 166147956 dns-tcp-responses-sent-ipv6: 34355207